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Verified answer
Jawabsudut luar segitiga
<CBD = 180 - 7x
9x = 92 + 180 - 7x
9x + 7x = 272
16x - 272
x = 17
<CBD = 180- 7x = 180 - 7(17) = 61
Verified answer
180-7x = 9x - 92180+92=9x+7x
272 = 16x
x = 272/16 = 17
Sudut CBD = 180 - 7x
= 180 - 7(17)
= 180 - 119
= 61 derajat.